Rip string envelope



' p 1931- Y B. D. GREENLAW 1,321,011

RIP STRING ENVELOPE Filed June 15, 1931 I I I ATTORNEY.

INVENTORZ V Patented Sept. 1, 1931 PATENT OFFICE RIP STRING ENVELOPE Application filed June 13,

The invention relates to envelopes for packaging articles and goods of various kinds, in which a rip string is incorporated, and particularly has for an object to provide an envelope specially suited to contain food products in such manner that a complete sealing of the contents may be attained, using sim le paper stock or the like, without the eilbctiveness of the security of the package being affected by -the inclusion of a simple straight strand rip' cord opener, therebeing required no complicated convolutions in the cord, nor multiple folding of the envelope required to effect this complete seal while retaining the advantages of the simple straight cord. On this account, my envelope is peculiarly desirable for putting upsamples of powders or other pulverized materials, and for packaging the unit materials for indi- 2o vidual servings of food and beverages. It

has been used for enclosing cocoa for a cup of beverage, with eminent success and satisfaction. In this kind of use it makes a strong appeal to the housewifes sense of cleanliness and unity to know that the cord and the attac ing glue are entirely without the container as originally prepared and away from the food contents. In addition to'safety, the

device obviates liability of peculiar or unpleasant flavors being imparted to the foods by the adhesive or the string.

A special object of the invention is to provide means which will cleanly sever the container so that the content's'may be discharged with a minimum of diversion and spilling.

This is of greatimportance in packages of pulverulent materials. 1; It is also an aim to so form the package that. while the severing strand is out of the contents space in the package, there is a minimum liability of adhesion between the opposed walls of the envelope at the severed edge due to the need for using adhesive adjacent'the extremities of these walls to afford a tight seal. v I

It is a further aim to present an envelope especially suited to be filled in automatic Inachines known as the Brown bag filling machine based on the patent to Cummings, No.

1931. Serial No. 544,211.'

539,171, the patent to Barter, No. 1,164,975 and others. I

I The invention involves additional objects,

advantages and features of invention, partly residing in the structure and arrangement of parts,and the method pursued in making the article, as will be understood from the following description and accompanying drawings, wherein Figure 1 is a back view of embodying my invention,

Figure 2 is a lateral edge view of the envelope. Figure 3 is a of the envelope.

Figure 4 is a plan of the blank for the envelope.

Figure 5 is a back view of the envelope in the first stage of manufacture. I

These is illustrated an envelope 10, formed customarily of paper, such as glassine, a translucent or .semi transparent stock, although other fabrics are applicable to use therefor. The blank for the envelope comprises a face area or front wall area 11, the boundaries of which indicate the creases on which the flaps are folded, a lar side flap 12, a narrow side flap 13, a top flap 14 and a bottom tongue 15. The side flaps are adapted to overlap slightly so that they may be secured together therebetween to form a back-wall, as shown in Figure 1. It is important to note that the side flaps extend at the envelope longitudinal sectional view the bottom longitudinally beyond the area 11 and when they are folded in and secured the'article comprises substantially a flattened tubewith the top flap 14 and tongue 15 laid flat therewith as continuations of the front wall. In the next operation, a cord or string 16 is coated with adhesive on a part, and then, while the flattened tube is laid upon a suitable support, the cord is held taut across and upon the tube'as a clamp, on a line at right angles to the longitudinal axis of the tube and near one end of the tube, and slightly inward of the ends of the overlapped side flaps l3 and 12.

The adjacent projecting extreme exterior end ward over the string while the latter is held I.

40 present instance the two thicknessestendto,

taut, the string thus serving as a former or holder and creaser in manufacture at the same time that it becomes incorporated in the envelope as a permanent part thereof for use in opening one or each side ofthe envelope. J

is' done one familiar automatic machinelin which a measure afterbeing filled is'moved] to discharge through'a funnel which has been v 'ihesive; applied to thejstring preventing The envelope is non ready for'filling, whieh I inserted'into theo'p'en endof 'the'env elope.-

- The flap l lf is'then gummed in the filling ma- 'chine'ana folded down the There is a pecul aradvantage in my method of folding the bottom of the enveloipe overthe *cord, lying in the fact that the crease there. is more rounded than where it 'is clamped by mechanical" grippers, pressers. and the v There is also obviated much danger of; damage to the envelope by 'plungersand other abrasion'of the envelope ona line over the cord bv the 'cord'pressing'the paper against.

livered from the machine.

like.

mechanical devices. I n addition, contrary to cord-is laid in the ereaseota single thickness there" is' a minimum liability: of

"objects-and surfa'ceswhieh would tend "to:

15 is shown. as having been gummed. ,and a wear away the material excessively, In the op posesharp bending aroud the cord, so that 1 material ona very narrow'z'one over the cord is not caused to sustain 'the entire pressure of abutting materials,

'In this construction a back walls (Fig; 3) which converge below the contents and liepre'ssed tightly together.

and that the cord 16 is'lying immediately mediate contents-retainingwalls of the'pa-c'k age; The application of adhesive to the cord may be-varied'as desired. The amount ap plied'is only sufiicient to act as'an adhesive 1 between 'the outer fibers of the cord and the 'i'mmed'i a tely velope. If the adhesive is applied only for) contacting paper of the ens short distances" on the cord at intervals or adjacent the side edgesof the'envelope only,-

the effect will be the same'iri openingn anip;

ul'ation, as described below; v

- To openthe package, a projectingend of the package when the contents are required; This has been found of great ji advantage in manufaetureof the envelope, as I have found it possible to remove theclamp-f' s-m m f om e .0p ;mehine= and p d meh l t psqrdtwt-znpe the envelope at 'the line of The' en'ds of the cord" are then package de' y p .Ytions'adistance frorntheendsof the hack the adhesiv 1 the'envelope.

gthereovei in ay be ,done manually, but it preferablyfdone a suitable nachine. In

4 of envelope it will be Y noted that the container proper has front and away from the bottom of the package. The

cordthus tears through both walls of the package; completely; severing: them evenly 'through'out the width of the package if the cord is pulled entirely away. By having a portion; of both" the front andback walls of ih s IIV-Q QPQleX ngl around the .coi-d at the fold, the possibility of adhesive, working back between them into the contents space is ob- --.via?t'ec1, and a complete freedom of the two sides atthe severed edges thus insured. The cord used is preferably a good cotton or linen thread, but other materials may be used, including 'metal fihre', or otherwise.

lf YQnlv',thetongue 15 were folded over andfs'e'c'ured'iipon thecord,-,there would be a certain amount of cementing oflthe front and back walls of the envelope tmgethei b-ythe adpr'ope'r opening of the 'package.. Consequently,' folding both" I front" and. Shack porportionfof the {flattened tube, insures i tgz ii nst tl'le possibility such adhesion as anno t get from the cord into Th" liolding io tl'tlie string taut over the envelope gand the folding of the envelope 1S Figure't the-envelope shown upon a support. or platen 18.0f such a machine while the. sidefolderslt) andZO have been operated to close theside fiaps 1 2" and 13. the top flap .beingllett.extended sopthat no crease 1s formedthereat. Thelb ottom flap or tongue backfolderQl.isshown, adapted tofold the lower part ofthe envelope over. the string 16 I It is an mportant advantage of my mventlon that', wlnle" having a r11) string incorporated in an {envelope with the string e):-

posedforre ady observation and grasping,

contents may be completely sealed.

tainer proper, and usually there is some clearance around thestring where it passes outof the envelope so that pulverulent materialsucould escape. ,My envelope is therefore In prior-envelopes where a string is leftso exposed, it has extended from within the con-' specially suitable to packaging of such materials.

I claim 1. An article for the purposes described comprising a fabric container having front and back Walls in contact at a line of fold and extending beyond said line, a flexible rip strand cemented to the outside of one wall of the container at said line and having a part for manipulation, the wall parts extending beyond said line, being folded over the strand and secured to the wall of the container immediately thereadjacent, whereby the strand is held immediately against the container wall at one boundary, and when pulled will sever both front and back walls of the container at the line of fold.

2. The method of forming a container of the character described consisting in producing a flattened tube, coatin a flexible severing member with adhesive, disposing the flattened tube upon a support, holding the severing member taut against the side of the tube in a line across one end of the tube as a clamp so as to hold the tube against the support at said line, bending the projecting end part of the tube against and around the taut severing member and securing the folded end against the adjacent wall of the container.

3. A container of the character described comprising a blank of flexible manually tearable material folded to form a sealed contents space, and having at least one infolded edge-closing part secured to the body of the container a distance from the fold, a flexible rip strand of stronger material incorporated upon an outside face of the container wall exterior to said sealed space on a line between said fold and the line of securement of said infolded part.

4. A container of manually tearable material having front and back walls meeting at and both extending beyond a line of fold forming one edge boundary of the container, at least one of the inlolded Wall portions being secured to the body of the container beyond the fold, and a rip string at the infolded )ortion of the container outward of the fol and spaced from said secured part.

In testimony whereof I affix my signature.

BURPEE D. GREENLAW. 

